JPH05200560A - Method and equipment for resistance welding - Google Patents
Method and equipment for resistance weldingInfo
- Publication number
- JPH05200560A JPH05200560A JP3270892A JP3270892A JPH05200560A JP H05200560 A JPH05200560 A JP H05200560A JP 3270892 A JP3270892 A JP 3270892A JP 3270892 A JP3270892 A JP 3270892A JP H05200560 A JPH05200560 A JP H05200560A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- current
- welded
- perforated
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003466 welding Methods 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title claims description 19
- 230000004907 flux Effects 0.000 claims abstract description 13
- 239000000446 fuel Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 239000004020 conductor Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
Landscapes
- Resistance Welding (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、被溶接部品の中心部に
貫通した孔をもつ部品(有孔部品)を溶接する場合に、
その溶接すべき二つの有孔部品の、一方の溶接すべき面
に突起を形成し、この突起と他方の有孔部品とを接触さ
せ、この接触部を溶接電極間で加圧し通電して前記接触
部を溶融接合する抵抗溶接方法及び装置に関する。さら
に詳しく言えば、溶接通電時に複数の突起部に同時に流
れる溶接電流の電磁力がお互いに作用し合って溶接部の
内側にスパッタ及びバリを磁気的に引き込む力を喪失さ
せ、溶接時に発生するスパッタやバリが有孔部品の内径
部に付着しないように配慮した抵抗溶接方法及び装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applicable to welding a part having a hole penetrating the center of a part to be welded (a part having a hole).
A projection is formed on one of the surfaces to be welded of the two perforated parts to be welded, and the projection and the other perforated part are brought into contact with each other, and the contact portion is pressed between welding electrodes to conduct electricity. The present invention relates to a resistance welding method and apparatus for fusion-bonding contact portions. More specifically, when the welding current is applied, the electromagnetic forces of the welding current that simultaneously flow through the multiple protrusions act on each other to lose the force that magnetically attracts spatter and burrs to the inside of the weld, causing spatter to occur during welding. TECHNICAL FIELD The present invention relates to a resistance welding method and apparatus in consideration of preventing burrs from adhering to the inner diameter of a perforated component.
【0003】[0003]
【従来の技術】抵抗溶接において、溶接時に発生するス
パッタやバリが溶接電流によって発生する電磁力によっ
て引っ張られる現象はよく知られている。溶接トランス
から電極間に流れる溶接電流によって発生する電磁力を
打ち消すような磁界を掛けて溶接する抵抗溶接装置は、
たとえば、特開昭58−53385号公報のごときもの
及び特公平2−61876号公報のごときものが提案さ
れている。2. Description of the Related Art In resistance welding, it is well known that spatters and burrs generated during welding are pulled by an electromagnetic force generated by a welding current. The resistance welding device that welds by applying a magnetic field that cancels the electromagnetic force generated by the welding current flowing from the welding transformer to the electrode is
For example, Japanese Patent Laid-Open No. 58-53385 and Japanese Patent Publication No. 2-61876 have been proposed.
【0004】すなわち、前者の溶接方法は、被溶接物を
保持する電極に導体を介して被溶接物に溶接電流を通電
するための溶接トランスを左右に配置し、溶接トランス
からの溶接電流によって生じる電磁力によりスパッタが
被溶接物から離れる方向に飛散するように各導体を配置
したものである。That is, in the former welding method, a welding transformer for supplying a welding current to the object to be welded is arranged on the left and right sides of the electrode holding the object to be welded through a conductor, and the welding current from the welding transformer causes the welding transformer. The conductors are arranged so that the spatter is scattered in the direction away from the workpiece by the electromagnetic force.
【0005】一方、後者の溶接方法は、溶接電流通電時
に突起の廻りに発生する磁界の高密度な部分に磁性体を
配置し、溶接電流通電時に突起の廻りに生じる磁界を打
ち消す方向に前記磁性体に磁界を発生させて溶接を行う
ものである。On the other hand, in the latter welding method, a magnetic material is placed in a high density portion of the magnetic field generated around the projection when the welding current is applied, and the magnetic field is canceled in the direction of canceling the magnetic field generated around the projection when the welding current is applied. Welding is performed by generating a magnetic field in the body.
【0006】しかしながら、前者の場合は中心部に貫通
した孔をもつ部品(有孔部品)を溶接するのに、とくに
貫通した孔の周囲に環状に配置した複数の突起をプロジ
ェクション溶接する場合には、各突起に流れる溶接電流
よって生じる磁界の相互作用により、中心方向に働く電
磁力を打ち消すことができず、スパッタやバリが貫通孔
の内側に発生し易い。However, in the former case, when welding a part having a hole penetrating in the center (a part having a hole), particularly when projection welding a plurality of annular projections arranged around the penetrating hole. The electromagnetic force acting in the central direction cannot be canceled due to the interaction of the magnetic field generated by the welding current flowing through each protrusion, and spatter and burrs are likely to occur inside the through hole.
【0007】すなわち、たとえば、図2のごとく4つの
突起に上から下へ同時に電流を流した場合に、内側の磁
束は打ち消しあい、外側の磁束は残るので合成されたも
のは図3のごとく各点には中心方向(F)の力が働き、
普通に溶接した場合にスパッタが内側に付着する。That is, for example, when currents are simultaneously applied to the four protrusions from the top to the bottom as shown in FIG. 2, the inner magnetic fluxes cancel each other out, and the outer magnetic fluxes remain. A force in the central direction (F) acts on the point,
Spatter adheres to the inside when welded normally.
【0008】このような場合、とくにたとえば被溶接物
が焼結金属からなる燃料噴射ポンプ用のギャとフライウ
エ−トとの溶接においては、スパッタやバリが貫通孔の
内部に付着し易く、これを別工程で厳密に検査し、除去
するにも手間がかかる。また万が一、スパッタやバリが
孔の内側に残存すると、燃料と共にエンジン内部に入り
込みエンジントラブルなどを引き起こす有害物となる。
したがって、スパッタ及びバリを部品内径に付着させる
ことは絶対に避けなければならない。In such a case, spatter and burrs are likely to adhere to the inside of the through hole, particularly in welding of a gas for a fuel injection pump and a fly weight, which are made of sintered metal as the object to be welded. It takes a lot of time to strictly inspect and remove it in a separate process. If spatters or burrs remain inside the holes, they become harmful substances that enter the engine together with the fuel and cause engine troubles.
Therefore, it is absolutely necessary to avoid attaching spatter and burrs to the inner diameter of the component.
【0009】一方、後者の方法は、交流で溶接する場合
には、磁界を打ち消すための磁性体も交番磁界を発生さ
せる必要があり、永久磁石では不可能である。またコイ
ルにしても複雑な形状になるのと、突起数だけ配置しな
ければならないという、煩わしさがあり、実用的でな
い。本発明はこのような問題に鑑み開発したものであ
る。On the other hand, in the latter method, in the case of welding with an alternating current, the magnetic body for canceling the magnetic field must also generate an alternating magnetic field, which is impossible with a permanent magnet. In addition, the coil has a complicated shape and the number of protrusions must be arranged, which is troublesome and impractical. The present invention was developed in view of such problems.
【0010】[0010]
【発明が解決しようとする課題】本発明が解決しようと
する問題は、貫通した孔周辺に複数の突起を形成した有
孔部品と、この突起と接触して重ねた有孔部品とを溶接
する場合に、従来では、通電時に溶接電流が複数の突起
に同時に流れると、各突起に流れる溶接電流によって生
じる電磁力がお互いに作用しあって部品の中心方向にス
パッタ等を引っ張る力が働き、スパッタやバリ等の有害
物を完全に除去することができなかった点にある。ま
た、突起周辺に磁性体を配置する煩雑さが避けられなか
った点にある。The problem to be solved by the present invention is to weld a perforated part having a plurality of projections formed around the through hole and a perforated part which is superposed in contact with the projection. Conventionally, when welding current flows through multiple protrusions at the same time during energization, the electromagnetic forces generated by the welding currents flowing through each protrusion act on each other to generate a force that pulls spatter, etc. toward the center of the component, causing spatter. The point is that it was not possible to completely remove harmful substances such as burrs and burrs. In addition, the complexity of arranging the magnetic body around the protrusion is unavoidable.
【0011】[0011]
【課題を解決するための手段】本発明の方法は、溶接す
べき面に複数の突起を形成した一方の有孔部品と、この
有孔部品の複数の突起と接して重ねられた他方の有孔部
品とを、対をなす溶接電極間で加圧通電して両部品を接
合する抵抗溶接方法において、重ね合わせた有孔部品の
内径に通電経路を形成し、この通電経路に溶接電流とは
逆方向の電流を溶接通電と同時に流し、溶接すべき突起
周辺に溶接電流によって生じる電磁力を打ち消すための
磁場を形成することを主要な特徴とする。とくに本発明
は、前記溶接すべき有孔部品が焼結金属からなるプロジ
ェクション溶接に有効である。また、本発明は一方の有
孔部品が複数の突起を有する燃料ポンプのギャ−であ
り、他方の有孔部品がフライウエ−トホルダである場合
の、両者のプロジェクション溶接に極めて有効である。According to the method of the present invention, one perforated part having a plurality of projections formed on the surface to be welded and the other perforated part in contact with the plurality of projections of the perforated part. In a resistance welding method in which a holed part and a pair of welding electrodes are energized under pressure to join the two parts together, an energization path is formed in the inner diameter of the perforated parts that are overlapped, and the welding current is defined in this energization path. The main feature is that a current in the opposite direction is applied at the same time as welding current is applied to form a magnetic field around the projection to be welded to cancel the electromagnetic force generated by the welding current. The present invention is particularly effective for projection welding in which the perforated part to be welded is made of sintered metal. Further, the present invention is extremely effective for projection welding of one of the perforated parts, which is a gear of a fuel pump having a plurality of projections, and the other perforated part, which is a fly weight holder.
【0012】次に、本発明の方法を実施するための装置
として、一方の溶接すべき面に複数の突起を設けて重ね
合わせた二つの有孔部品を、プロジェクション溶接する
装置であって、溶接すべき二つの有孔部品に溶接に必要
な加圧力と溶接電流を与える一対の溶接電極と、前記有
孔部品の内径に挿入し、溶接通電と同時に溶接電流と逆
方向の電流を流し、溶接電流によって生じる電磁力を打
ち消す方向に磁束を発生するための通電経路を構成する
電磁力バランス電極と、溶接用電源及び逆電流用電源と
を含むことを主要な特徴とする。Next, as a device for carrying out the method of the present invention, a device for projection welding two perforated parts in which a plurality of projections are provided on one surface to be welded and which are superposed, A pair of welding electrodes that apply welding force and welding current to two perforated parts to be welded, and the inner diameter of the perforated parts are inserted, and at the same time as welding energization, a current in the opposite direction to the welding current is passed to perform welding. The main features are that it includes an electromagnetic force balance electrode forming an energization path for generating a magnetic flux in a direction of canceling an electromagnetic force generated by an electric current, a welding power source and a reverse current power source.
【0013】[0013]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。図1は本発明方法を実施するための装置の一例を
示す。図中1は上プラテンで、加圧シリンダ(図省略)
で上下するように上腕に支持されている。2は下プラテ
ンで、下腕に支持されている。3は上電極で、上プラテ
ンに支持されている。4は下電極で下プラテンに支持さ
れている。5,6は溶接すべき有孔部品で、たとえば燃
料ポンプのフライウエ−トホルダ及びギャ−などの焼結
金属製部品の中心に同心上に位置する貫通孔0を有する
ものである。上電極3の加圧面に接する一方の有孔部品
5には、その内径周辺に複数の突起Pが環状に沿って形
成されている。下電極4の加圧面に接する他方の有孔部
品6には有孔部品5の内径に嵌入して位置決めするガイ
ド7及び下電極の溝に嵌入して位置決めされるガイド7
'が設けてある。8は電磁力バランス電極で、上下電極
の貫通孔を同一軸線(a−a)上において上下動し、下
電極4とは絶縁材14を介して絶縁されている。この電
極は、スパッタ及びバリの発生を防ぐ手段として、被溶
接物の内径に通電経路を形成するもので、溶接電流と逆
方向の電流が溶接電流通電時に流れ、溶接電流によって
部品内径方向に発生する電磁力を打ち消すための磁場を
発生させるものである。9は電磁力バランス電極を駆動
するシリンダである。10は溶接用トランスで、出力端
子のプラス側に上プラテン1を接続し、また、マイナス
側に下プラテン2を導体11,12を介して接続したも
のである。13は逆電流用トランスで、前記溶接用トラ
ンス13と対称位置に配置し、各出力端子を電磁力バラ
ンス電極8に接続したもので、電流は溶接用トランスか
ら流れる電流方向と反対方向に流れるように、導体1
5,16を介し、溶接用トランス10とは極性をプラ
ス,マイナス逆に接続したものである。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of an apparatus for carrying out the method of the invention. In the figure, 1 is an upper platen, and a pressure cylinder (not shown)
It is supported by the upper arm to move up and down. The lower platen 2 is supported by the lower arm. An upper electrode 3 is supported by the upper platen. A lower electrode 4 is supported by the lower platen. Reference numerals 5 and 6 are perforated parts to be welded, for example, having through holes 0 located concentrically at the centers of sintered metal parts such as a fly weight holder and a gear of a fuel pump. On one of the perforated parts 5 which is in contact with the pressing surface of the upper electrode 3, a plurality of protrusions P are formed along the annular shape around the inner diameter thereof. On the other perforated part 6 that contacts the pressing surface of the lower electrode 4, a guide 7 that is fitted into the inner diameter of the perforated part 5 and positioned, and a guide 7 that is fitted and positioned in the groove of the lower electrode.
' Is provided. Reference numeral 8 denotes an electromagnetic force balance electrode, which vertically moves through holes of the upper and lower electrodes on the same axis (aa) and is insulated from the lower electrode 4 by an insulating material 14. This electrode forms a current-carrying path in the inner diameter of the object to be welded as a means to prevent spatter and burrs.A current in the direction opposite to the welding current flows when the welding current is applied and is generated in the inner diameter direction of the part by the welding current. A magnetic field is generated to cancel the electromagnetic force that occurs. Reference numeral 9 is a cylinder for driving the electromagnetic force balance electrode. Reference numeral 10 is a welding transformer, in which the upper platen 1 is connected to the positive side of the output terminal, and the lower platen 2 is connected to the negative side via conductors 11 and 12. A reverse current transformer 13 is arranged at a position symmetrical to the welding transformer 13 and each output terminal is connected to the electromagnetic force balance electrode 8 so that the current flows in the direction opposite to the direction of the current flowing from the welding transformer. On the conductor 1
The transformer for welding 10 is connected to the welding transformer 10 via 5 and 16 with the polarities being positive and negative.
【0014】次に動作を説明する。加圧シリンダで上プ
ラテン1を上昇し、上電極3を開放した後、溶接すべき
二つの有孔部品を組み合わせ電磁力バランス電極8を部
品内径に挿入して位置決めして下電極4の電極面にセッ
トする。セットが終わると、加圧シリンダを作動し上電
極3と下電極4との間で組み合わせ部品を加圧し、上下
電極に溶接に必要な値の電流を溶接用トランス10から
投入すると同時に、逆電流用トランス13からは溶接電
流とは反対方向の電流を電磁バランス電極8に流す。そ
の電流は被溶接部品の内径を下から上に貫通した通電経
路を流れる。このように、溶接通電と同時に有孔部品の
中心に溶接電流と逆向きの電流を流すと、図4のごとく
反時計方向の磁束が生じるので、外側に残っている磁束
とがバランスし、スパッタ及びバリを内側に引き込むこ
となく溶接を遂行することができる。したがって、部品
内径に付着するスパッタやバリを防ぐことができ、溶接
品質向上を図ることができる。この場合、溶接電流に対
して逆方向の電流は少なくてよい。Next, the operation will be described. After the upper platen 1 is lifted by the pressurizing cylinder and the upper electrode 3 is opened, two perforated parts to be welded are combined and the electromagnetic force balance electrode 8 is inserted into the inside diameter of the part and positioned to position the electrode surface of the lower electrode 4. Set to. When the setting is completed, the pressurizing cylinder is operated to pressurize the combined parts between the upper electrode 3 and the lower electrode 4, and the upper and lower electrodes are supplied with a current required for welding from the welding transformer 10 and, at the same time, a reverse current is applied. A current in the direction opposite to the welding current is passed from the working transformer 13 to the electromagnetic balance electrode 8. The current flows through a current-carrying path that passes through the inner diameter of the part to be welded from bottom to top. As described above, when a current in the direction opposite to the welding current is passed through the center of the perforated component at the same time when the welding current is applied, a counterclockwise magnetic flux is generated as shown in FIG. Also, welding can be performed without pulling the burr inward. Therefore, it is possible to prevent spatter and burrs adhering to the inner diameter of the component, and improve the welding quality. In this case, the current in the opposite direction to the welding current may be small.
【0015】本発明方法の実施例では、溶接用トランス
と逆電流用トランスとを左右対称に配置したが、この実
施例に限定されることなく、たとえば溶接用トランスの
磁界の影響が出て溶接用トランスと反対側の突起の外側
にバリ発生するような場合は、この電磁力を打ち消すた
めには更にもう1台溶接用トランスを設ける必要があ
り、この場合には逆電流用トランスも2台使用すること
が望ましい。また、溶接トランスの二次側が2コイル4
端子の場合には、1コイルを溶接用に、他のコイルを逆
方向用に1台の溶接トランスで逆電流用トランスを兼用
しても同様の作用が得られる。In the embodiment of the method of the present invention, the welding transformer and the reverse current transformer are arranged symmetrically. However, the present invention is not limited to this embodiment. For example, the influence of the magnetic field of the welding transformer causes welding. If burr is generated on the outside of the projection on the side opposite to the work transformer, it is necessary to install another welding transformer to cancel this electromagnetic force. In this case, two reverse current transformers are required. It is desirable to use. Also, the secondary side of the welding transformer is 2 coils 4
In the case of a terminal, the same operation can be obtained even if one coil is used for welding and the other coil is used for the reverse direction by using one welding transformer as a reverse current transformer.
【0016】[0016]
【発明の効果】以上において説明したとおり、本発明の
方法によると、孔明き部品の孔周辺に複数の突起物を配
置して溶接する場合に、複数の突起に流れる溶接電流に
よって各突起部周辺に生じる合成磁束により部品の中心
方向に押す力を、被溶接部品の中心に逆向きの電流を流
すことにより打ち消し、溶接電流により生じる電磁力の
バランスをはかり、スパッタやバリを部品内径側に引き
込まないで溶接することができる。As described above, according to the method of the present invention, when a plurality of protrusions are arranged and welded around the hole of a perforated part, the periphery of each protrusion is affected by the welding current flowing through the plurality of protrusions. The force that pushes in the direction of the center of the part due to the combined magnetic flux generated in the part is canceled by applying a reverse current to the center of the part to be welded, and the electromagnetic force generated by the welding current is balanced, and spatter and burrs are drawn to the inside diameter of the part. Can be welded without.
【0017】また本発明装置によると、1台の溶接用ト
ランスで逆電流用に併用することもできる。また既存の
溶接用トランスに逆電流用トランスを左右対称に配置す
ることもできるし、ワ−クの位置決めとして電磁バラン
ス電極を付加するだけであるから、構造が簡単で容易に
スパッタ飛散防止を図ることができ、従来のようにスパ
ッタ及びバリを除去する効果な後工程設備が節約できる
構造簡単、安価な設備の溶接装置を実現できる。Further, according to the apparatus of the present invention, one welding transformer can be used together for reverse current. Also, the reverse current transformer can be symmetrically arranged on the existing welding transformer, and since only the electromagnetic balance electrode is added for positioning the work, the structure is simple and the spatter scattering is easily prevented. As a result, it is possible to realize a welding device having a simple structure and a low cost, which can save the post-process equipment effective for removing spatter and burrs as in the conventional case.
【図1】本発明の方法を実施するための装置の1例を原
理的に示す断面図。1 is a cross-sectional view showing in principle one example of an apparatus for carrying out the method of the present invention.
【図2】4つの突起に上から下へ同時に電流を流した場
合に、内側の磁束は打ち消し合う原理を示す磁束分布図
である。FIG. 2 is a magnetic flux distribution diagram showing a principle of canceling out inner magnetic fluxes when currents are simultaneously applied to four protrusions from top to bottom.
【図3】外側に残る合成磁束により各突起には中心方向
(F)の力が働き、スパッタが内側に付着する場合の原
理を示す磁束分布図である。FIG. 3 is a magnetic flux distribution diagram showing the principle in the case where a force in the central direction (F) acts on each protrusion due to the combined magnetic flux remaining on the outside and the spatter adheres to the inside.
【図4】本発明の原理を説明する磁束分布図である。FIG. 4 is a magnetic flux distribution diagram for explaining the principle of the present invention.
【符号の説明】 1 上プラテン 2 下プラテン 3 上電極 4 下電極 5 有孔部品 6 有孔部品 7 ガイド 8 電磁力バランス電極 9 シリンダ 10 溶接用トランス 11 導体 12 導体 13 逆電流用トランス[Explanation of symbols] 1 upper platen 2 lower platen 3 upper electrode 4 lower electrode 5 perforated part 6 perforated part 7 guide 8 electromagnetic force balance electrode 9 cylinder 10 welding transformer 11 conductor 12 conductor 13 reverse current transformer
Claims (5)
方の有孔部品と、この有孔部品の複数の突起と接して重
ねられた他方の有孔部品とを、対をなす溶接電極間で加
圧通電して両部品を接合する抵抗溶接方法において、重
ね合わせた有孔部品の内径に通電経路を形成し、この通
電経路に溶接電流とは逆方向の電流を溶接通電と同時に
流し、溶接すべき突起周辺に溶接電流によって生じる電
磁力を打ち消すための磁場を形成することを特徴とする
抵抗溶接方法。1. A welding electrode forming a pair of one perforated component having a plurality of protrusions formed on the surface to be welded and the other perforated component superposed in contact with the plurality of protrusions of the perforated component. In the resistance welding method in which pressure is applied between the two parts to join them together, a current-carrying path is formed in the inner diameter of the overlapped perforated parts, and a current in the direction opposite to the welding current is passed through this current-carrying path simultaneously with welding current-carrying. A resistance welding method characterized in that a magnetic field for canceling an electromagnetic force generated by a welding current is formed around a projection to be welded.
なる請求項1に記載の抵抗溶接方法。2. The resistance welding method according to claim 1, wherein the perforated part to be welded is made of sintered metal.
突起を有する燃料ポンプのギャ−であり、他方の有孔部
品がフライウエ−トホルダである請求項1または請求項
2に記載の抵抗溶接方法。3. The resistance according to claim 1, wherein one of the perforated parts to be welded is a gear of a fuel pump having a plurality of projections, and the other of the perforated parts is a fly weight holder. Welding method.
て重ね合わせた二つの有孔部品を、プロジェクション溶
接する装置であって、溶接すべき二つの有孔部品に溶接
に必要な加圧力と溶接電流を与える一対の溶接電極と、
前記有孔部品の内径に挿入し、溶接通電と同時に溶接電
流と逆方向の電流を流し、溶接電流によって生じる電磁
力を打ち消す方向に磁束を発生するための通電経路を構
成する電磁力バランス電極と、溶接用電源及び逆電流用
電源とを含む抵抗溶接装置。4. A device for performing projection welding of two perforated parts, wherein one surface to be welded is provided with a plurality of projections and is overlapped, wherein the two perforated parts to be welded have a necessary welding force. A pair of welding electrodes that give pressure and welding current,
An electromagnetic force balance electrode that is inserted into the inner diameter of the perforated part, and that flows a current in the direction opposite to the welding current at the same time as welding current is applied to form a current passage for generating a magnetic flux in a direction that cancels the electromagnetic force generated by the welding current. , A resistance welding apparatus including a welding power source and a reverse current power source.
さい請求項5に記載の抵抗溶接装置。5. The resistance welding apparatus according to claim 5, wherein the current value in the opposite direction is smaller than the welding current value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP04032708A JP3077923B2 (en) | 1992-01-23 | 1992-01-23 | Resistance welding method and apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP04032708A JP3077923B2 (en) | 1992-01-23 | 1992-01-23 | Resistance welding method and apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05200560A true JPH05200560A (en) | 1993-08-10 |
JP3077923B2 JP3077923B2 (en) | 2000-08-21 |
Family
ID=12366346
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP04032708A Expired - Fee Related JP3077923B2 (en) | 1992-01-23 | 1992-01-23 | Resistance welding method and apparatus |
Country Status (1)
Country | Link |
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JP (1) | JP3077923B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014097687A1 (en) * | 2012-12-21 | 2014-06-26 | 株式会社鷺宮製作所 | Weld structure for refrigerant circuit component and welding method for refrigerant circuit component |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100496851C (en) * | 2004-01-30 | 2009-06-10 | 三菱电机株式会社 | Welder and its welding method, and rotating electric machine |
-
1992
- 1992-01-23 JP JP04032708A patent/JP3077923B2/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014097687A1 (en) * | 2012-12-21 | 2014-06-26 | 株式会社鷺宮製作所 | Weld structure for refrigerant circuit component and welding method for refrigerant circuit component |
JP2014121721A (en) * | 2012-12-21 | 2014-07-03 | Saginomiya Seisakusho Inc | Junction structure in refrigeration circuit constituent component and junction method for refrigeration circuit constituent component |
EP2937168A4 (en) * | 2012-12-21 | 2016-09-07 | Saginomiya Seisakusho Inc | Weld structure for refrigerant circuit component and welding method for refrigerant circuit component |
CN104870136B (en) * | 2012-12-21 | 2017-05-10 | 株式会社鹭宫制作所 | Weld structure for refrigerant circuit component and welding method for refrigerant circuit component |
US10118244B2 (en) | 2012-12-21 | 2018-11-06 | Kabushiki Kaisha Saginomiya Seisakusho | Weld structure for refrigerant circuit component and welding method for refrigerant circuit component |
Also Published As
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JP3077923B2 (en) | 2000-08-21 |
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